1998 nissan altima code 446 won't go away!

Question

Replaced everthing, purge valve , vent control valve, canister, fuel filler neck, and all the hoses in evap system.cleared code. It came back the second time I started the car. Need help

Answer 1

Hi there,

I would suggest checking the wiring. Here is a list of other possible causes.

P0446 NISSAN - Evaporative System Canister Vent Control Valve Circuit

Read more: https://www.autocodes.com/p0446_nissan.html